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A-Level Biology OCR A

Sample Random Grid Outline Randomly Area Sampling Mark

To randomly sample an area, mark out a grid, use random numbers to determine coordinates, and take a sample at each coordinate pair.

Para muestrear aleatoriamente un área, se marca una cuadrícula, se usan números aleatorios para determinar las coordenadas y se toma una muestra en cada par de coordenadas generado.

Front Outline how to randomly sample an area.
Back Random sampling:
  • Mark out grid on grass using tape measures at right angles
  • Use random numbes to determine the x and y coordinates on your grid
  • Take sample at each of the coordinate pairs generated

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